// 
//  Author:
//    Anton Lauridsen anton at lauridsen decimal-separator info
// 
//  Copyright (c) 2009, Anton Lauridsen
// 
//  All rights reserved.
// 
//  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
// 
//     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in
//       the documentation and/or other materials provided with the distribution.
//     * Neither the name of the [ORGANIZATION] nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
// 
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
//  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
//  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
//  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
//  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
//  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
//  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
//  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 

using System;
using OpenMetaverse;

namespace OpenFuse.Backend.Commands.Downloaders
{
	public class ObjectDownloader
	{
		public byte[] Download(SlSession session, UUID parentFolderID, OpenMetaverse.InventoryItem item)
		{		
			byte[] oaredObject = null;
			
			Primitive rezedPrimitive = Utilities.RezInventoryItem(session, item);
			
			if(rezedPrimitive != null)
			{
				// determine if we haven't got copy rights, the rezed object has gone
				// from the inventory, and we need to put it back
				bool itemIsProtected = false;
				if((rezedPrimitive.Properties.Permissions.OwnerMask & PermissionMask.Copy) ==  0)
					itemIsProtected = true;
				
				LinkSet linkset = LinkSet.AutoPopulate(session, new BackendPrimitive(rezedPrimitive));
				
				// get task inventories for all prims
				linkset.DownloadTaskInventories(session);
				
				OarFile oar = new OarFile();
				
				
				if(linkset.Root.ID != item.AssetUUID && item.AssetUUID != UUID.Zero)
					session.Logger.DebugFormat("-----Got strange item '{0}' is this OpenSim?", item.Name);
				
				// SL likes to report a Zero assetUUID for some assets
				if(item.AssetUUID == UUID.Zero) 
				{
					session.Logger.Debug("Performing fixup of assetUUID");
					item.AssetUUID = linkset.Root.ID;
				}
		
				oar.AddInventoryNode(item.Name + "_" + item.UUID.ToString(), item.UUID, item.AssetUUID, item.InventoryType, item.AssetType);
				session.Logger.DebugFormat("------ SaveLinkset '{0}' with AssetUUID={1} and Linkset.RootID={2}", linkset.Root.Properties.Name, item.AssetUUID, linkset.Root.ID);
				oar.SaveLinkset(session, linkset, ArchiveConstants.ASSETS_PATH, linkset.Root.ID);
				oar.DownloadAndSaveLinksetTextures(session, linkset);
				itemIsProtected |= oar.DownloadAndSaveTaskInventory(session, linkset);
	            oaredObject = oar.PackageArchive();
				
				string filename = "data/" + item.Name.Replace("*","_").Replace("?","_").Replace("(","_").Replace(")","_").Replace(" ","_").Replace("/", "_") + ".tar.gz";
				
				
				System.IO.File.WriteAllBytes(filename, oaredObject);

				if(itemIsProtected) {
					session.Logger.DebugFormat("Object '{0}' is protected", rezedPrimitive.Properties.Name);
					Utilities.DeRezObject(session, rezedPrimitive, DeRezDestination.AgentInventoryTake, parentFolderID);
				} else {
					session.Logger.DebugFormat("Object '{0}' is not protected", rezedPrimitive.Properties.Name);
					UUID bogusItemID = Utilities.DeRezObject(session, rezedPrimitive, DeRezDestination.TrashFolder, UUID.Zero);
					Utilities.HardDeleteItem(session, bogusItemID);
				}
			}
			return oaredObject;
		}
	}
}
